.login-bg{
    background: url("/imgs/fc.jpg") no-repeat center center ;
}
.form-box{
    border-radius: 8px;
    width: 350px;
    padding: 20px;
    right: 20%;
    top: 50%;
    transform: translateY(-50%);
    background-color: #2b2b2b;
    color: #fff;
    font-family: "微软雅黑" , Consolas , "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
}
.mar-tb-30px{
    margin-top: 30px;
    margin-bottom: 30px;
}
